Afanassieva, Olga B., Palaeontological Institute of Russian Academy of Sciences, 123, Profsoyuznaya St., Moscow I17647, Russian Federation
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Vol 49, No 2 (1999): Circum-Arctic Palaeozoic Vertebrates - Articles
The exoskeleton of Ungulaspis and Ateleaspis (Osteostraci, Agnatha) from the Lower Devonian of Severnaya Zemlya, Russia
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